One of the method of plant protection, including the protection of pea, from phytopathogens is the biological one, especially applied in ecological cultivations. The effectiveness of biotechnical preparations such as Biosept 33 SL, Grevit 200 SL, Biochikol 020 PC, Bioczos BR and a fungicide Miedzian 50 WP in the protection of pea cv. ʻSześciotygodniowy TOR’ from pathogenic fungi was studied. The greatest number of not infected plants was obtained after the application of Biosept 33 SL, Miedzian 50 WP and Grevit 200 SL. The highest yield was gathered from pea plants after the application of Biosept 33 SL and Grevit 200 SL. Plants in the combinations with Biochikol 020 PC and Bioczos BR were characterized by good yielding. It was obtained from infected pea seeds and plants of two stage 24–26 species of fungi from 13–17 genera. Among them most often occurred the following species: Alternaria alternata, Boeremia exigua, Fusarium culmorum, F. oxysporum, Gibberella avenacea, Haematonectria haematococca, Peyronellaea pinodes, Pythium irregulare and Thanatephorus cucumeris. Biosept 33 SL and Grevit 200 SL were most effective in improving the healthiness and yielding of the studied cultivar of pea.

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